研究缺口只要存在于仅凭个人()所做的研究判断和基于市场潜力的商业判断之间。
A.爱好
B.兴致
C.兴趣
D.好恶
参考答案:C
连词成句。
1. here, is, photo, my, family (.)
2. the, for, your, of, thanks, photo, family (.)
3. sister, his, is, Alice (.)
4. are~ parents, those, Jane's (.)
5. that, is, girl, not . cousin, his (.)
试说明:不论x取何值代数式(x3+5x2+4x﹣3)﹣(﹣x2+2x3﹣3x﹣1)+(4﹣7x﹣6x2+x3)的值是不会改变的.